<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>find</title>
  </head>
  <body>
    <input type="checkbox">
    <script type="text/javascript" >
      let arr = [
        {name:'张三',age:18},
        {name:'李四',age:19},
        {name:'王五',age:20},
      ]

     let x = arr.find((item)=>{
        return item.age === 190
      })
      console.log(x)
    </script>
  </body>
</html>